500 REPORT ON /OOLOGY, MDCCCXLIV. 



individuals presented a black, the smaller a brown, head ; 

 when shrivelled up and dried they resembled short black 

 hairs. The lady said she had suffered in the same way for 

 two years, and that she had become affected by having on 

 one occasion, during the summer, slept on the ground near 

 some stagnant water, and when she woke her mouth was 

 filled with very minute worms. 



SUPPLEMENT. 



A Ilelminthological work, by Luigi Rolando, presented 

 as long ago as the year 1805 to the Academy of Sciences in 

 Sienna, has not been printed till within the last two years. 

 (Atti dell' Accademia delle Scienze di Siena, torn, x ; Siena, 

 1841, p. 1 . " Osservazioni sopra i vermi intestinali colla 

 descrizione di qualche nuovo genere e nuova specie, del Dott. 

 Luigi Rolando.") These observations, of course, bear upon 

 them the stamp of a period at which these parasites, and 

 especially their internal structure, were very little known ; 

 it is consequently difficult to determine the worms described 

 by Rolando, and the more especially since the appended 

 figures are extremely imperfect. In the first place, he asserts 

 that Man, besides the Ascaris lumbricoides also harbours 

 another larger worm, differing from that species, and in 

 which he thinks he has recognised an Echinorhynchits. He 

 next describes an Ophiostoma from the stomach of Falco 

 peregrirms. A Round-worm, more than three inches long, 

 and which is said to have been marked with a black ring in 

 the middle of the body, found in the parenchyma of the 

 lungs of Anas clangula, has received from Rolando the old 

 name of Crino. Several nematoid worms, one and a half inch 

 long, found in the caecum of a Vanellus, he refers to Hexa- 

 stonta, because they are furnished at the blunt anterior extre- 

 mity of the body with six black orifices or puucta, arranged 

 one behind the other, Avhilst the posterior extremity of the 

 body is acuminated. Three small nematoid worms from the 

 intestine of an Egyptian goose, the anterior extremity of 



